Haven't used them, so no direct experience with these particular pads and rotors. However, the link is typical eBay hype, with many nonsensical claims. They also state that their pads don't squeal, and further that they include a rubber shim to place behind the pads to stop squealing. That can't be good for pedal feel. Compare prices at www.zeckhausenracing.com or other board sponsors. There, you would get Axxis or similar pads, Centric rotors (skip the drilled and slotted versions), and good service.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue